I told them I was born in Australia, so they made me Boomerang. This is why the whole world hates you, by the way. An entire nation boiled down to what you can remember from that time you got high and watched Crocodile Dundee. Guess I should be glad I didn't end up some kinda kangaroo guy.
Fred Myers was born in Australia but moved to America when he was a small child. In America, his great love was baseball and he developed an extraordinary pitching arm. He became a professional baseball player in the minor leagues after graduating high school, and a few years later entered the major leagues. Within a year he was suspended for accepting bribes. Embittered, he was eventually contracted by the subversive criminal organization, the Secret Empire, and offered employment.
They designed special weaponry for him to exploit his pitching ability and he became their special operative, code-named Boomerang.  One of the first heroes he battled was the Hulk.
When the Secret Empire crumbled, Boomerang went to Australia to hide out and recuperate. There he incessantly practised the art of throwing and decided to become a freelance assassin. Obtaining a new arsenal of weapons designed and financed by underworld financier Justin Hammer, Boomerang came back to America to pursue his criminal ambitions.His first mission was to assassinate Iron Fist, though he was defeated.
Myers was later released and hired by Max Stryker to get Dr.Bruce Banner use gamma ray to cure his cancer, but wound up battling the Hulk. 
Boomerang later joined the supervillain team the Sinister Syndicate. The team clashed with the hero Spider-Man and the mercenary Silver Sable when they were hired by the villain Jack O'Lantern, who the pair were hunting at the time. Although Boomerang was easily overpowered by Silver Sable, the Syndicate defeated the duo and were about to finish them off when they were interrupted by the reformed villain Sandman, who helped the pair defeat the Syndicate. The Syndicate were seldom seen together afterwards, and eventually disbanded.
Boomerang also engaged in solo criminal operations in San Diego, where he was again defeated by Spider-Man. 
Justin Hammer’s hired mercenaries, Blacklash, Boomerang, and the second Blizzard tour the grounds of one of Hammer’s front companies in Rome, Electronica Fabritzi.  He was then employed by Hammer again and battled Cardiac and Spider-Man.
Boomerang joined the Masters of Evil during the Crimson Cowl's weather control scheme.
After the Superhuman Registration Act was passed, Boomerang and the Sinister Syndicate were on the run from War Machine and Komodo. Although they escaped, the villains were soon caught by the Scarlet Spiders.
After the events of the Secret Invasion, Fred joined Norman Osborn's corrupt Initiative and became a superhero in the service of the law with the alias of "Outback". He was outed as a criminal and punched in the face on TV by Prodigy.
Myers was hired by the Rose and came into conflict with Jackpot, and learned her true identity. He tracked her down to her her home and killed her husband in front of her and her daughter. 
He escaped together with several other inmates who were members of the Thunderbolts. Due to a failure of the teleportation technology of their tower (caused by Man-Thing), the tower began to move in time as well as in space. They ended up in World War II teaming up with the Invaders to battle the Nazis They next end up in Victorian London. They go even further back in time ending up in King Arthur's court in Camelot.
They eventually bounced back to the time of the original Zemo lead Thunderbolts team. After the Fixer killed his younger self this began to cause a collapse in reality which forced Fixer to assume his younger self's place. She returned to the future with the rest of the Thunderbolts.
He was a regular visitor at the Bar with No Name in Manhattan. Having previously been critically injured by Spider-Man, he was on crutches at the time, Gambit stealing one of his boomerangs to frame Joelle for stealing from the assembled villains.
Boomerang possesses the normal human strength of a man of his age, height, and build who engages in intensive regular exercise.
Costume: Boomerang's costume contains a wide variety of hidden pockets and pouches for his smaller, specialized boomerangs, in addition to attachments for securing the seven larger primary boomerangs.
Light body armor: Boomerangs costume acts as light body armor.
Boot Jets: Boomerang's costume is equipped with boot jets which are mentally commanded using cybernetic circuitry built into the cowl. These are capable of two hours of flight at 30 mph before needing to be refueled, and generate enough thrust to support Boomerang's own weight plus an additional 100 lbs. The boot jets can be used as offensive weapons when fired at close range.
Specialized Boomerangs: Boomerang's primary weapons are the boomerangs, which he wears on his uniform. There are seven boomerangs attached in plain sight, each of which is rigged with special gimmicks.
Shatterangs - These detonate with a force equivalent to twenty hand grenades.
Gasarangs - These release highly concentrated tear gas upon impact.
Razorangs - These razor-edged boomerangs are capable of slicing through steel.
Screamerangs - These generate high-intensity sonic waves as they fly through the air.
Bladarangs - These whirling boomerangs cut like buzz-saw blades.
Gravityrangs - These create a local gravity field around their target.
Reflexerangs - These are solid-weighted boomerangs